# A258313 (b-file synthesized from sequence entry) 0 1 1 3 2 15 3 93 4 641 5 4719 6 36335 7 289017 8 2356321 9 19586283 10 165364799 11 1414193205 12 12224831937 13 106645825047 14 937685498271 15 8301129707121 16 73929906605249 17 661919872559763 18 5954449287679919 19 53791836313371405 20 487807821246726273 21 4438980860105747967 22 40521481906592540175